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Add stats functions and views to provide access to a transaction's own

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statistics counts.  These numbers are being accumulated but haven't yet been
transmitted to the collector (and won't be, until the transaction ends).
For some purposes, though, it's handy to be able to look at them.

Joel Jacobson, reviewed by Itagaki Takahiro
This commit is contained in:
Tom Lane
2010-08-08 16:27:06 +00:00
parent 83f5491c63
commit 46aa77c7bd
8 changed files with 525 additions and 67 deletions
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5
src/include/pgstat.h
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@ -5,7 +5,7 @@
*
* Copyright (c) 2001-2010, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.89 2010/02/26 02:01:20 momjian Exp $
* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.90 2010/08/08 16:27:06 tgl Exp $
* ----------
*/
#ifndef PGSTAT_H
@ -692,6 +692,9 @@ extern void pgstat_report_xact_timestamp(TimestampTz tstamp);
extern void pgstat_report_waiting(bool waiting);
extern const char *pgstat_get_backend_current_activity(int pid, bool checkUser);
extern PgStat_TableStatus *find_tabstat_entry(Oid rel_id);
extern PgStat_BackendFunctionEntry *find_funcstat_entry(Oid func_id);
extern void pgstat_initstats(Relation rel);
/* nontransactional event counts are simple enough to inline */